<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        a:link{
            color:black;
            /* 去除下划线 */
            text-decoration: none;
        }
        a:visited{
            color:green;
        }
        a:hover{
            color:red;
        }
        a:active{
            color:blue;
        }
        .three>input:focus{
            color:red;
        }

        body{
            font-family: '微软雅黑';
        }

    </style>
</head>
<body>
    <p style="text-align: right;">heheheheheheheheehehehehehehe</p>
    <div class="three">
        <input type="text">
        <input type="text">
        <input type="text">
        <input type="text">
    </div>
    <a href="#">猫猫</a>
</body>
</html>